Introducing the Donaldson primary air filter, meticulously engineered for heavy-duty engine applications. Its high-efficiency cellulose media ensures exceptional performance across a wide spectrum of demanding environments. The filter boasts corrosion-resistant, coated steel liners that provide robust support to the media during operation, optimizing airflow for maximum efficiency. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media from bunching and contributing to a prolonged service life. This filter strictly adheres to ISO 5011 standards, reflecting Donaldson's commitment to quality. With dimensions of 10.35 inches in length, 2.21 inches inside diameter, and 4.43 inches outside diameter, it stands as a reliable filtration solution.